20725815

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{2129}}^1$

素因数の和:2207

約数の個数: 32

約数和(自身を含む): 36806400

約数和(自身を除く): 16080585

約数列:

[1, 3, 5, 11, 15, 33, 55, 59, 165, 177, 295, 649, 885, 1947, 2129, 3245, 6387, 9735, 10645, 23419, 31935, 70257, 117095, 125611, 351285, 376833, 628055, 1381721, 1884165, 4145163, 6908605, 20725815]

約数ペア:

[(1, 20725815), (3, 6908605), (5, 4145163), (11, 1884165), (15, 1381721), (33, 628055), (55, 376833), (59, 351285), (165, 125611), (177, 117095), (295, 70257), (649, 31935), (885, 23419), (1947, 10645), (2129, 9735), (3245, 6387)]